.<template>
  <div>
    <button @click="isShow = !isShow">显示/隐藏</button>
    <transition-group name="txbbb" appear>
      <h1 v-show="isShow" key="1">你好啊！</h1>
      <h1 v-show="!isShow" key="2">最爱喝兽奶</h1>
    </transition-group>
  </div>
</template>

<script>
export default {
  name:'myTest2',
  data(){
    return{
      isShow:true
    }
  }
}
</script>

<style scoped>
  h1{
    background: hotpink;
    transition: .5s;
  }
  /* 进入的起点,离开的终点 */
  .txbbb-enter,.txbbb-leave-to{
    transform: translateX(-100%);
  }
  /* 进入的终点,离开的起点 */
  .txbbb-to,.txbbb-leave{
    transform: translateX(0);
  }
</style>